CVE-2026-109833

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 62/100
Published: 2026-10-13 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

Description

A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. In the VNC TLS read path, partial consumption of the internal peek buffer incorrectly moves remaining peeked bytes into the caller-supplied buffer instead of compacting the peek buffer. A remote attacker who can reach an enabled VNC TLS listener and trigger a peek/read size mismatch can cause an out-of-bounds write, leading to denial of service.

Weakness Classification (1)

References & Advisories (2)

https://bugzilla.redhat.com/show_bug.cgi?id=2550367
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

5.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.37%
Raw Score 0.003680
Percentile 31.1%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00368
2026-11-13
0.00368
2026-11-12
0.00368
2026-11-10
0.00368
2026-11-09
0.00368
2026-11-08
0.00368
2026-11-07
0.00368
2026-11-06
0.00368
2026-11-05
0.00368

Intelligence Sources

mitre ref →
nvd ref →